WRAG Specifications | WoodAirGrille.com

Callout Size	Outside Dimensions		Rough Opening (minimum-maximum)		Free Air
Callout Size	Width	Height	Width	Height	SF	% free
08x10	9.25''	11.25''	6.75'' - 8.5''	8.75'' - 10.5''	0.296	53.2%
08x12	9.25''	13.25''	6.75'' - 8.5''	10.75'' - 12.5''	0.367	55.0%
08x14	9.25''	15.25''	6.75'' - 8.5''	12.75'' - 14.5''	0.438	56.3%
08x16	9.25''	17.25''	6.75'' - 8.5''	14.75'' - 16.5''	0.509	57.3%
08x18	9.25''	19.25''	6.75'' - 8.5''	16.75'' - 18.5''	0.580	58.0%
08x20	9.25''	21.25''	6.75'' - 8.5''	18.75'' - 20.5''	0.651	58.6%
08x22	9.25''	23.25''	6.75'' - 8.5''	20.75'' - 22.5''	0.723	59.1%
08x24	9.25''	25.25''	6.75'' - 8.5''	22.75'' - 24.5''	0.794	59.5%
08x25	9.25''	26.25''	6.75'' - 8.5''	23.75'' - 25.5''	0.829	59.7%
08x26	9.25''	27.25''	6.75'' - 8.5''	24.75'' - 26.5''	0.865	59.9%
08x28	9.25''	29.25''	6.75'' - 8.5''	26.75'' - 28.5''	0.936	60.2%
08x30	9.25''	31.25''	6.75'' - 8.5''	28.75'' - 30.5''	1.007	60.4%
08x32	9.25''	33.25''	6.75'' - 8.5''	30.75'' - 32.5''	1.079	60.7%
08x34	9.25''	35.25''	6.75'' - 8.5''	32.75'' - 34.5''	1.150	60.9%
08x36	9.25''	37.25''	6.75'' - 8.5''	34.75'' - 36.5''	1.221	61.0%

10x08	11.25''	9.25''	8.75'' - 10.5''	6.75'' - 8.5''	0.290	52.3%
10x10	11.25''	11.25''	8.75'' - 10.5''	8.75'' - 10.5''	0.382	55.1%
10x12	11.25''	13.25''	8.75'' - 10.5''	10.75'' - 12.5''	0.474	56.9%
10x14	11.25''	15.25''	8.75'' - 10.5''	12.75'' - 14.5''	0.566	58.3%
10x16	11.25''	17.25''	8.75'' - 10.5''	14.75'' - 16.5''	0.658	59.3%
10x18	11.25''	19.25''	8.75'' - 10.5''	16.75'' - 18.5''	0.750	60.0%
10x20	11.25''	21.25''	8.75'' - 10.5''	18.75'' - 20.5''	0.842	60.7%
10x22	11.25''	23.25''	8.75'' - 10.5''	20.75'' - 22.5''	0.934	61.2%
10x24	11.25''	25.25''	8.75'' - 10.5''	22.75'' - 24.5''	1.026	61.6%
10x25	11.25''	26.25''	8.75'' - 10.5''	23.75'' - 25.5''	1.072	61.8%
10x26	11.25''	27.25''	8.75'' - 10.5''	24.75'' - 26.5''	1.118	61.9%
10x28	11.25''	29.25''	8.75'' - 10.5''	26.75'' - 28.5''	1.211	62.3%
10x30	11.25''	31.25''	8.75'' - 10.5''	28.75'' - 30.5''	1.303	62.5%
10x32	11.25''	33.25''	8.75'' - 10.5''	30.75'' - 32.5''	1.395	62.8%
10x34	11.25''	35.25''	8.75'' - 10.5''	32.75'' - 34.5''	1.487	63.0%
10x36	11.25''	37.25''	8.75'' - 10.5''	34.75'' - 36.5''	1.579	63.1%
12x08	13.25''	9.25''	10.75'' - 12.5''	6.75'' - 8.5''	0.356	53.5%
12x10	13.25''	11.25''	10.75'' - 12.5''	8.75'' - 10.5''	0.469	56.3%
12x12	13.25''	13.25''	10.75'' - 12.5''	10.75'' - 12.5''	0.582	58.2%
12x14	13.25''	15.25''	10.75'' - 12.5''	12.75'' - 14.5''	0.695	59.6%
12x16	13.25''	17.25''	10.75'' - 12.5''	14.75'' - 16.5''	0.808	60.6%
12x18	13.25''	19.25''	10.75'' - 12.5''	16.75'' - 18.5''	0.921	61.4%
12x20	13.25''	21.25''	10.75'' - 12.5''	18.75'' - 20.5''	1.033	62.0%

12x22	13.25''	23.25''	10.75'' - 12.5''	20.75'' - 22.5''	1.146	62.5%
12x24	13.25''	25.25''	10.75'' - 12.5''	22.75'' - 24.5''	1.259	63.0%
12x25	13.25''	26.25''	10.75'' - 12.5''	23.75'' - 25.5''	1.316	63.1%
12x26	13.25''	27.25''	10.75'' - 12.5''	24.75'' - 26.5''	1.372	63.3%
12x28	13.25''	29.25''	10.75'' - 12.5''	26.75'' - 28.5''	1.485	63.6%
12x30	13.25''	31.25''	10.75'' - 12.5''	28.75'' - 30.5''	1.598	63.9%
12x32	13.25''	33.25''	10.75'' - 12.5''	30.75'' - 32.5''	1.711	64.1%
12x34	13.25''	35.25''	10.75'' - 12.5''	32.75'' - 34.5''	1.823	64.4%
12x36	13.25''	37.25''	10.75'' - 12.5''	34.75'' - 36.5''	1.936	64.5%
14x08	15.25''	9.25''	12.75'' - 14.5''	6.75'' - 8.5''	0.422	54.3%
14x10	15.25''	11.25''	12.75'' - 14.5''	8.75'' - 10.5''	0.556	57.2%
14x12	15.25''	13.25''	12.75'' - 14.5''	10.75'' - 12.5''	0.690	59.1%
14x14	15.25''	15.25''	12.75'' - 14.5''	12.75'' - 14.5''	0.823	60.5%
14x16	15.25''	17.25''	12.75'' - 14.5''	14.75'' - 16.5''	0.957	61.5%
14x18	15.25''	19.25''	12.75'' - 14.5''	16.75'' - 18.5''	1.091	62.3%
14x20	15.25''	21.25''	12.75'' - 14.5''	18.75'' - 20.5''	1.224	63.0%
14x22	15.25''	23.25''	12.75'' - 14.5''	20.75'' - 22.5''	1.358	63.5%
14x24	15.25''	25.25''	12.75'' - 14.5''	22.75'' - 24.5''	1.492	63.9%
14x25	15.25''	26.25''	12.75'' - 14.5''	23.75'' - 25.5''	1.559	64.1%
14x26	15.25''	27.25''	12.75'' - 14.5''	24.75'' - 26.5''	1.625	64.3%
14x28	15.25''	29.25''	12.75'' - 14.5''	26.75'' - 28.5''	1.759	64.6%
14x30	15.25''	31.25''	12.75'' - 14.5''	28.75'' - 30.5''	1.893	64.9%
14x32	15.25''	33.25''	12.75'' - 14.5''	30.75'' - 32.5''	2.026	65.1%
14x34	15.25''	35.25''	12.75'' - 14.5''	32.75'' - 34.5''	2.160	65.3%
14x36	15.25''	37.25''	12.75'' - 14.5''	34.75'' - 36.5''	2.294	65.5%
16x08	17.25''	9.25''	14.75'' - 16.5''	6.75'' - 8.5''	0.488	54.9%
16x10	17.25''	11.25''	14.75'' - 16.5''	8.75'' - 10.5''	0.643	57.9%
16x12	17.25''	13.25''	14.75'' - 16.5''	10.75'' - 12.5''	0.797	59.8%
16x14	17.25''	15.25''	14.75'' - 16.5''	12.75'' - 14.5''	0.952	61.2%
16x16	17.25''	17.25''	14.75'' - 16.5''	14.75'' - 16.5''	1.106	62.2%
16x18	17.25''	19.25''	14.75'' - 16.5''	16.75'' - 18.5''	1.261	63.0%
16x20	17.25''	21.25''	14.75'' - 16.5''	18.75'' - 20.5''	1.415	63.7%
16x22	17.25''	23.25''	14.75'' - 16.5''	20.75'' - 22.5''	1.570	64.2%
16x24	17.25''	25.25''	14.75'' - 16.5''	22.75'' - 24.5''	1.724	64.7%
16x25	17.25''	26.25''	14.75'' - 16.5''	23.75'' - 25.5''	1.802	64.9%
16x26	17.25''	27.25''	14.75'' - 16.5''	24.75'' - 26.5''	1.879	65.0%
16x28	17.25''	29.25''	14.75'' - 16.5''	26.75'' - 28.5''	2.033	65.4%
16x30	17.25''	31.25''	14.75'' - 16.5''	28.75'' - 30.5''	2.188	65.6%
16x32	17.25''	33.25''	14.75'' - 16.5''	30.75'' - 32.5''	2.342	65.9%
16x34	17.25''	35.25''	14.75'' - 16.5''	32.75'' - 34.5''	2.497	66.1%
16x36	17.25''	37.25''	14.75'' - 16.5''	34.75'' - 36.5''	2.651	66.3%

18x08	19.25''	9.25''	16.75'' - 18.5''	6.75'' - 8.5''	0.554	55.4%
18x10	19.25''	11.25''	16.75'' - 18.5''	8.75'' - 10.5''	0.730	58.4%
18x12	19.25''	13.25''	16.75'' - 18.5''	10.75'' - 12.5''	0.905	60.3%
18x14	19.25''	15.25''	16.75'' - 18.5''	12.75'' - 14.5''	1.080	61.7%
18x16	19.25''	17.25''	16.75'' - 18.5''	14.75'' - 16.5''	1.256	62.8%
18x18	19.25''	19.25''	16.75'' - 18.5''	16.75'' - 18.5''	1.431	63.6%
18x20	19.25''	21.25''	16.75'' - 18.5''	18.75'' - 20.5''	1.606	64.3%
18x22	19.25''	23.25''	16.75'' - 18.5''	20.75'' - 22.5''	1.782	64.8%
18x24	19.25''	25.25''	16.75'' - 18.5''	22.75'' - 24.5''	1.957	65.2%
18x25	19.25''	26.25''	16.75'' - 18.5''	23.75'' - 25.5''	2.045	65.4%
18x26	19.25''	27.25''	16.75'' - 18.5''	24.75'' - 26.5''	2.132	65.6%
18x28	19.25''	29.25''	16.75'' - 18.5''	26.75'' - 28.5''	2.308	65.9%
18x30	19.25''	31.25''	16.75'' - 18.5''	28.75'' - 30.5''	2.483	66.2%
18x32	19.25''	33.25''	16.75'' - 18.5''	30.75'' - 32.5''	2.658	66.5%
18x34	19.25''	35.25''	16.75'' - 18.5''	32.75'' - 34.5''	2.834	66.7%
18x36	19.25''	37.25''	16.75'' - 18.5''	34.75'' - 36.5''	3.009	66.9%
20x08	21.25''	9.25''	18.75'' - 20.5''	6.75'' - 8.5''	0.620	55.8%
20x10	21.25''	11.25''	18.75'' - 20.5''	8.75'' - 10.5''	0.816	58.8%
20x12	21.25''	13.25''	18.75'' - 20.5''	10.75'' - 12.5''	1.013	60.8%
20x14	21.25''	15.25''	18.75'' - 20.5''	12.75'' - 14.5''	1.209	62.2%
20x16	21.25''	17.25''	18.75'' - 20.5''	14.75'' - 16.5''	1.405	63.2%
20x18	21.25''	19.25''	18.75'' - 20.5''	16.75'' - 18.5''	1.601	64.0%
20x20	21.25''	21.25''	18.75'' - 20.5''	18.75'' - 20.5''	1.797	64.7%
20x22	21.25''	23.25''	18.75'' - 20.5''	20.75'' - 22.5''	1.993	65.2%
20x24	21.25''	25.25''	18.75'' - 20.5''	22.75'' - 24.5''	2.190	65.7%
20x25	21.25''	26.25''	18.75'' - 20.5''	23.75'' - 25.5''	2.288	65.9%
20x26	21.25''	27.25''	18.75'' - 20.5''	24.75'' - 26.5''	2.386	66.1%
20x28	21.25''	29.25''	18.75'' - 20.5''	26.75'' - 28.5''	2.582	66.4%
20x30	21.25''	31.25''	18.75'' - 20.5''	28.75'' - 30.5''	2.778	66.7%
20x32	21.25''	33.25''	18.75'' - 20.5''	30.75'' - 32.5''	2.974	66.9%
20x34	21.25''	35.25''	18.75'' - 20.5''	32.75'' - 34.5''	3.171	67.1%
20x36	21.25''	37.25''	18.75'' - 20.5''	34.75'' - 36.5''	3.367	67.3%

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