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Escape Hatches (model 1)

Part No.	External Dimensions A X B		Cut-out Dimensions C X D		Model	Number of handles
	in.	mm.	in.	mm.
ALT6363SL	27 5/8 x 27 5/8	701 x 701	24 11/16 x 24 11/16	627 x 627	1	2
ALT5151SL	23 1/16 x 23 1/16	581 x 581	19 15/16 x 19 15/16	507 x 507	1	2
ALT4747SL	21 7/16 x 21 7/16	544 x 544	18 1/2 x 18 1/2	470 x 470	1	2
ALTD520SL	23 5/16 x 20 5/8	592 x 524	20 3/8 x 17 11/16	518 x 450	2	2
ALTR529SL	23 5/16	592	20 3/8	518	3	2

Deck Hatches (model 2)

Part No.	External Dimensions A X B		Cut-out Dimensions C X D		Model	Number of handles
	in.	mm.	in.	mm.
ALT4242SL	19 1/2 x 19 1/2	495 x 495	16 9/16 x 16 9/16	421 x 421	1	2
ALT5038SL	22 14/16 x 17 3/7	581 x 451	9 15/16 x 14 13/16	507 x 377	1	2
ALT4633SL	20 14/16 x 15 13/16	531 x 401	18 x 12 7/8	457 x 327	1	2
ALTR420SL	19 5/16	491	16 7/16	417	3	2

Ventilation Hatches (model 3)

Part No.	External Dimensions A X B		Cut-out Dimensions C X D		Model	Number of handles
	in.	mm.	in.	mm.
ALT2626SL	13 1/8 x 13 1/8	334 x 334	10 1/4 x 10 1/4	260 x 260	1	2
ALTD420SL	19 5/16 x 12 13/16	491 x 326	16 7/16 x 9 15/16	417 x 252	1	2
ALA3502SL	16 9/16 x 10 7/8	421 x 276	13 11/16 x 7 15/16	347 x 202	1	2

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